Sleeping on your stomach is generally the least recommended sleep position because it forces your spine out of its natural alignment for hours at a time. That said, it’s not all bad news. Prone sleeping has a real benefit for people who snore or have sleep apnea, and for most adults, the downsides can be reduced with a few simple adjustments.
Why It Strains Your Spine
When you sleep face down, your lower back arches beyond its natural curve because your torso sinks into the mattress. That sustained compression on the lumbar spine can lead to stiffness, aching, or sharper pain over time. The problem compounds at the other end of your spine: since you can’t breathe face-first into a pillow, you turn your head to one side, holding your neck in a rotated position for hours. This twists the cervical vertebrae out of alignment with the rest of your spine.
Research has linked stomach sleeping to increased neck strain and reduced overall spinal alignment. If you wake up with a stiff neck, sore lower back, or tingling in your arms, your sleep position is a likely contributor. People with existing back or neck conditions often find that prone sleeping makes their symptoms noticeably worse.
The One Clear Benefit: Breathing
Stomach sleeping does have a genuine advantage for people with obstructive sleep apnea or chronic snoring. When you lie on your back, gravity pulls your tongue and soft tissues toward the back of your throat, partially blocking your airway. Lying face down reverses that effect.
A study published by the European Respiratory Society found that people with moderate to severe sleep apnea saw their apnea-hypopnea index (a measure of how often breathing stops or becomes shallow per hour) drop from about 70 events per hour in the supine position to roughly 45 in the prone position. That’s a significant reduction. If you snore heavily or have untreated sleep apnea and find yourself naturally gravitating to your stomach, your body may be compensating to keep your airway open.
Effects on Your Skin and Face
Pressing your face into a pillow for six to eight hours creates mechanical compression that, over years, contributes to a distinct type of wrinkle. These “sleep wrinkles” typically appear on the forehead, lips, and cheeks. They tend to run perpendicular to the expression lines you get from smiling or squinting, so they create a cross-hatched pattern that can age your face faster than your years would suggest.
The key difference from normal wrinkles is that sleep wrinkles aren’t caused by muscle contractions. That means treatments like Botox, which work by relaxing muscles, won’t improve them. Dermal fillers can temporarily soften their appearance, but the most effective approach is prevention: sleeping on your back or using a pillow designed to keep your face off the surface. Of course, consciously changing a sleep position you’ve held for decades is easier said than done.
Stomach Sleeping During Pregnancy
If you’re newly pregnant and wondering whether you need to change positions immediately, you can relax. Early in pregnancy, sleeping on your stomach is perfectly fine. According to Stanford Medicine Children’s Health, you can continue sleeping prone as long as it remains comfortable. As your belly grows through the second trimester, the position naturally becomes impractical, and most women shift on their own. There’s no specific week where it suddenly becomes dangerous; your body will tell you when it’s time to switch, typically by making the position too uncomfortable to maintain.
Why It’s Dangerous for Infants
The risk calculus is entirely different for babies. Placing an infant face down to sleep dramatically increases the risk of sudden infant death syndrome (SIDS). A study in the American Journal of Epidemiology found that infants placed prone had roughly 2.6 times the risk of SIDS compared to infants placed on their backs. The danger spikes even higher in specific scenarios: babies who were usually placed on their backs but were put down on their stomachs on a given occasion, an unaccustomed position, faced an 8.2 times greater risk. Infants placed on their sides who then rolled to a prone position had an 8.7 times greater risk.
These numbers are why every major pediatric organization recommends placing babies on their backs for every sleep, including naps, until their first birthday.
How to Make Stomach Sleeping Easier on Your Body
If you’ve tried switching to your back or side and keep waking up on your stomach anyway, there are practical ways to reduce the strain.
- Use a very thin pillow or none at all. Standard pillows prop your head up at a steep angle, worsening neck rotation. Stomach sleepers do best with a pillow under three inches thick, sometimes called “low loft.” Some people find skipping the head pillow entirely is the most comfortable option.
- Place a thin pillow under your pelvis. This lifts your hips slightly and reduces the exaggerated arch in your lower back. Even a folded towel can help take pressure off your lumbar spine.
- Choose a firmer mattress. A surface that’s too soft lets your torso sink deeper, increasing the spinal curve. A medium-firm to firm mattress keeps your body more level.
- Stretch in the morning. A few minutes of gentle extension stretches, like child’s pose or a standing side bend, can counteract the compression from a night spent prone.
Gradually transitioning to side sleeping is worth attempting if you’re experiencing pain. Placing a body pillow along your front can mimic the pressure sensation of stomach sleeping while keeping you in a more neutral spinal position. Many habitual stomach sleepers find this “half-prone” position, angled toward the mattress but not fully face down, is a workable compromise that significantly reduces neck and back strain.